using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;

​

using System.Xml;

using System.Xml.Serialization;

using System.Xml.Linq;

​

using System.Runtime.Serialization;

​

using FluentAssertions;

​

//https://stackoverflow.com/questions/78783684/datacontract-name-attribute-with-varying-xml-field

​

//using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

//https://learn.microsoft.com/en-us/dotnet/api/system.runtime.serialization.datacontractserializer.-ctor?view=net-8.0#system-runtime-serialization-datacontractserializer-ctor(system-type-system-string-system-string)

//DataContractSerializer (Type type, string rootName, string rootNamespace);

​

​

[DataContract(Name = "foo1", Namespace = "")]

public class Foo

{

    [DataMember(Name = "name", Order = 1)] 

    public string Name { get; set; }

    [DataMember(Name = "id", Order = 2)] 

    public string Id { get; set; }

}

​

class TestClass

{

    public static void Test()

    {

        new TestClass().TestDeserialization();

    }

​

    //[Fact]

    public void TestDeserialization()

    {

        var foo1 = "<foo1>\n\t<name>SomeValue</name>\n\t<id>101</id>\n</foo1>";

        var foo2 = "<foo2>\n\t<name>SomeOtherValue</name>\n\t<id>205</id>\n</foo2>";

​

        var serializer = new DataContractSerializer(typeof(Foo));

        var objFoo1 = (Foo)serializer.ReadObject(XmlReader.Create(new StringReader(foo1)));

        objFoo1.Name.Should().Be("SomeValue");

        objFoo1.Id.Should().Be("101");

​

        var serializer2 = new DataContractSerializer(typeof(Foo), "foo2", "");

        var objFoo2 = (Foo)serializer2.ReadObject(XmlReader.Create(new StringReader(foo2)));

​

        objFoo2.Name.Should().Be("SomeOtherValue"); // Passes

        objFoo2.Id.Should().Be("205");

​

        var foo3xml = "<unknownRoot>\n\t<name>SomeOtherValue</name>\n\t<id>205</id>\n</unknownRoot>";

​

        using (var textReader = new StringReader(foo3xml))

        using (var xmlReader = XmlReader.Create(textReader))

        {

            if (xmlReader.MoveToContent() != XmlNodeType.Element) // Advance to the root mode

                throw new XmlException("No root node found");

            var serializer3 = new DataContractSerializer(typeof(Foo), xmlReader.LocalName, xmlReader.NamespaceURI);

            var objFoo3 = (Foo)serializer3.ReadObject(xmlReader);

​

            objFoo3.Name.Should().Be("SomeOtherValue"); // Passes

            objFoo3.Id.Should().Be("205");

​

            Console.WriteLine(foo3xml);

            objFoo3.Dump();

        }

    }       

}

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1}), {2}", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , Environment.Version, Environment.OSVersion);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​